badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
Close

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

⇐ BackProceed to Checkout ⇒
There are no items in this cart.
Continue Shopping
Menu
Grade: 12th pass 

                        
the sum of n terms of an A.P. is 3n 2 +5. the number of term which equals 159 is????

							
the sum of n terms of an A.P. is 3n2 +5. the number of term which equals 159 is????
5 years ago

Answers : (1)

aarthi s
19 Points 
							
Tn=Sn-(Sn-1)
Tn=159
Sn=3n^2+5
Sn-1=3(n-1)^2+5
substitute these values and you get 27
5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Other Related Questions on Algebra

Signum function is a periodic..? Tell me the answer please Answer & Earn Cool Goodies
Three forces P,Q,R act in the same sense along the sides BC,CA,AB of the traingle ABC.If their... Answer & Earn Cool Goodies
consider p q r to be vertices with integral coordinates and pq^2 + rq^2
Which of the following sentences are statements? Justify your answer. Mathematics is difficult
How it's explained (m+1)^7/(m+1)^5+2(m+1)^3-(m+1)/105
View all Questions »


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers To Win!!! Click Here for details